Abstract
To realize the secure storage and sharing of files, a file cloud storage method based on XOR (Exclusive OR) operation is proposed. In this method, a file is encrypted into multiple file slices based on XOR operation, then these file slices are uploaded to different locations of the public cloud platform. These file slices can be downloaded from the cloud platform and restored to the original data file based on XOR operation. In this way, even if a file slice is stolen, the information of the file will not be stolen. This paper gives the XOR-based encryption and restoration algorithms for the two cases where the original data file is not divided or divided into arbitrary secrets. Finally, we give the implementation method of the prototype.
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